This course is based on module 3 of ECREEE curriculum for solar installers. This module aims at making students to understand autonomous solar PV system design. After completing this course, the installer will be able to confirm system design to match client expectation, e.g. load assessments, site drawings, identify and assess any specific site safety hazards associated with the installation of the system, verify the appropriate module/array layout, orientation and mounting method for ease of installation, electrical configuration and maintenance, verify suitable locations for battery bank, including ventilation and access requirements, and verify the compliance of protective elements between the different components of a photovoltaic system.